diff --git a/src/gas/gas.cxx b/src/gas/gas.cxx
index 555bdf3a..5ae91f1d 100644
--- a/src/gas/gas.cxx
+++ b/src/gas/gas.cxx
@@ -92,7 +92,7 @@ Gas::getSampledData (thresholdContext* ctx) {
 }
 
 int
-Gas::getSample (thresholdContext* ctx) {
+Gas::getSample () {
     return mraa_aio_read (m_gasCtx);
 }
 
diff --git a/src/gas/gas.h b/src/gas/gas.h
index d94c44f0..18ce111f 100644
--- a/src/gas/gas.h
+++ b/src/gas/gas.h
@@ -86,7 +86,7 @@ class Gas {
          *
          * @param ctx threshold context
          */
-        virtual int getSample (thresholdContext* ctx);
+        virtual int getSample ();
 
         /**
          *